diff --git a/tests/e2e/management/management_client.py b/tests/e2e/management/management_client.py
index d5147682018..2a686b596c0 100644
--- a/tests/e2e/management/management_client.py
+++ b/tests/e2e/management/management_client.py
@@ -35,6 +35,7 @@ from models import (
     TeamDeleteBody,
     TeamInfoParams,
     TeamInfoResponse,
+    TeamListResponse,
     TeamMemberAddBody,
     TeamMemberDeleteBody,
     TeamMemberEntry,
@@ -155,6 +156,19 @@ class ManagementClient:
             )
         ).team_info
 
+    def team_list_ids(self) -> tuple[str, ...]:
+        return tuple(
+            entry.team_id
+            for entry in unwrap(
+                self.proxy.transport.get(
+                    "/team/list",
+                    headers=self.proxy.transport.master,
+                    params=NoBody(),
+                    response_type=TeamListResponse,
+                )
+            ).root
+        )
+
     def team_info_status(self, team_id: str) -> ProbeResult:
         return self.proxy.transport.probe("/team/info", params=TeamInfoParams(team_id=team_id))
 
diff --git a/tests/e2e/management/test_management_e2e.py b/tests/e2e/management/test_management_e2e.py
index 09a89862c5a..9cc46779296 100644
--- a/tests/e2e/management/test_management_e2e.py
+++ b/tests/e2e/management/test_management_e2e.py
@@ -227,6 +227,19 @@ class TestTeamRoutes:
             f"key generated under team {team_id} carries team_id {key_info.team_id!r} in /key/info"
         )
 
+    @pytest.mark.covers("mgmt.team.list.happy_path")
+    def test_created_team_appears_in_team_list(
+        self, client: ManagementClient, resources: ResourceManager
+    ) -> None:
+        alias = f"e2e-mgmt-team-{unique_marker()}"
+        team_id = _create_team(client, resources, alias, ["gemini-2.5-flash"])
+
+        _ = _poll(
+            client,
+            lambda: team_id if team_id in client.team_list_ids() else None,
+            f"/team/list never included the created team {team_id}",
+        )
+
     @pytest.mark.covers("mgmt.team.member_add.persists")
     def test_member_add_and_delete_persist_to_team_info(
         self, client: ManagementClient, resources: ResourceManager
diff --git a/tests/e2e/models.py b/tests/e2e/models.py
index a03a5308168..36765610545 100644
--- a/tests/e2e/models.py
+++ b/tests/e2e/models.py
@@ -654,6 +654,15 @@ class TeamDeleteBody(BaseModel):
     team_ids: list[str]
 
 
+class TeamListEntry(BaseModel):
+    team_id: str
+
+
+class TeamListResponse(RootModel[list[TeamListEntry]]):
+    """GET /team/list answers with a bare array of team objects (not an object
+    wrapping them). Only team_id is read; pydantic ignores the rest."""
+
+
 UserRole = Literal["proxy_admin", "proxy_admin_viewer", "internal_user", "internal_user_viewer"]